Chart-holder



Nu. 6|8,767. l Patented lan. 3|, |899.

B. F. BALMEB.

cHA'nT HOLDER.

(Apglication Bled Feb. 1, 1898.) y (No Mdel.) l 2 Sheets-*Sheet l.

31a/vento@ SH01/mugs.

No. 6|8,767. Patented lan. 3|, |899.

B.. F. BALMEB. CHART HULDER.

(Application tiled Feb. 1, 1898.)

(No Model.) 2 Sheets--Sheet 2.

Witwe/@0% and chart.

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BENJAMIN F. BALMER, OF EDSON, KANSAS.

CHART-HOLDER.

SPECIFICATION forming part of Letters Patent No. 618,767, dated January31, 1899.

Application filed February l, 1898. Serial No. 668,741. (No model.)

To @ZZ whom it may concern.-

Beit known that I, BENJAMIN F. BALMER, a citizen of the United States,residing at Edson, in the county of Sherman and State of Kansas,'haveinvented certain new and useful Improvements in Chart-Holders; and I dohereby declare the following` to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates to an improved chartholder; and the objectthereof is to provide a simple construction of holder which may bequickly and readily assembled to support and exhibit the chart and whichwhen not in use may be folded to convenient form, so as to be out of theway and also to protect the chart.

Vith the above object in view the invention consists in the noveldetails of construction hereinafter fully described in thespecilication, particularly pointed out in the claims, and clearlyillustrated by the accompanying drawings, in which- Y Figure l is aperspective View of the holder, showing the supporting-arms partiallyunfolded preparatory to assembling the holder sectional view showing thechart and holder assembled. Fig. 3 is a transverse sectional View of thesame. Fig. 4 is a horizontal sectional view. Fig. 5 is an enlargedsectional view of one of the rollers. Fig. 6 is an enlarged sectionaldetail View of one of the castings in which the rollers are journaled.Fig. 7 is a similar View of the casting, showing the rollers jonrnaledtherein and the locking device therefor.

Referring more particularly to the accompanying drawings, A designates abox or casing constituting the base of the holder, and B arms-pivoted tothe end pieces of said casing adjacent to their upper edges by thehinges C, placed on the inner faces of said arms and end pieces, so thatthe former are adapted to swing inwardly when the holder is not in use.When said arms are swung upwardly to vertical position, their loweredges abut against the upper edges of theend pieces of the casing, andthus the arms are held from outward movement.

Castings a are pivoted in the casing by the pivots h, extendingcentrally therefrom and Fig. 2 is a vertical longitudinal engagingbearings formed in the end walls of said casing, said castings beingslotted at their respective ends at c to receive the journals d ofrollers D. These journals d are formed integrally with caps d', whichare adapted to it upon the reduced ends of thel rollers and at theirouter ends are enlarged to form shoulders c, the journals at one end ofthe rollers being formed on the outer sides of the shoulders e with thestems E to receive an operating-key F, which is inserted throughopenings F in the end wall of the casing and which may be positionedupon either of said stems to rotate the rollers. p

Castings d are slotted vertically adjacent to their respective ends atc, said slots opening into the slots c and receiving the springlatches fwhen they are pressed upwardly to permit the insertion and removal ofthe rollerjournals in and from the slots o of the castings. tendingupwardly through the vertical slots and provided with buttons f', bymeans of which they may be raised to permit thejournals of the rollersto be removed therefrom.

Arms B are formed at their upper ends with openings G to receive thejournals of roller H, which are adapted to be positioned therein byspringing the arms slightly outwardly after they have been raised tovertical position. This roller when supported by the arms is above andat a point between the rollers D.

A chart I of any flexible material is attached at its respective ends tothe rollers D and is adapted to be wound thereon, said chart alsopassing over the roller I-I. Upon both sides of this chart may be placedany desired matter-such as lessons in music,pen manship, geography,&c.or the same may be used as a calendar, and I do not of course limitmyself to the nature or character of the chart.

In operation the key is applied to either roller and the latter revolvedto wind the chart thereon, so that any lesson printed on the chart maybe exhibited, and by reversing the positions of rolls D by swinging thecast- .ings on their pivots the reverse side of the chart may be used.This reversing operation may be conveniently accomplished by detachingthe upper roller H, winding up the portion of the chart extendingthereover,

These latches have their free ends ex- IOO turning the castings on theirpivots a halfrevolution, so as to bring the lower sides of the rollers Duppermost, unwinding the free portion of the chart at the center, andpassing the same upwardly through the space between the said two rollersI). It will thus be seen that by this operation the reverse side of thechart will be exposed, and the free central portion of said chart maythen be again passed over the roller I-I, supported by the arms B, andeither one of the rollersD turned to unwind the chart to disclose thematter imprinted thereon.

For preventing the rotation of the castings while the rollers are beingoperated to exhibit the lessons on the desired side of. the chart Iprovide the spring J, secured intermediate its ends to the end wall ofthe casing and havinglugs K secured to its respective ends, which extendupon the upper side of one of the castings. In order to reverse theposition of the rollers, it is therefore necessary to press the springbackwardly until the lugs carried thereby are out of the path of thecasting, when the reversal of the rollers may be effected.

When not in use, the roller II is removed, the chart wound upon therollers D, and arms B folded inwardly, so that the chart and roller Hare positioned in the casing with the arms folded thereon. A lid may beprovided for the box or casing and hinged to one edge thereof, ifdesired, so as to close said box or casing and protect the chart fromdust and dirt.

The holder may be readily and quickly assembled byswinging the armsupwardly and raising roller II with the chart and positioning the samebetween said supporting-arms.

From the above description it will be seen that I have provided a verysimple construction of holder for charts,which may be quickly assembledfor use, and which when not in use is adapted to fold to convenient formand contain the chart, so that the same is protected from dust and dirt.

Having thus fully described my invention, what I claim as new anduseful, and desire to secure by Letters Patent, is-

l. In a device of the character described, the combination. with a base,of rotatable castings supported thereby, rollers journaled in saidcastings, and a iiexible band adapted to be wound on said rollers,substantially as described.

2. In a device of the character described, the combination with a base,of rotatable castings supported thereby, rollers j ournaled in saidcastings, a flexible band adapted to be wound on said rollers, and alocking device for preventing the rotation of said castings,substantially as described.

8. In a chart-holder, the combination of a casing, rotatable castingsjournaled in the opposite ends thereof by pivots projecting from saidcastings each of said castings being provided at its opposite ends withslots, a pair of rollers having journals mounted in said slots, latchdevices to hold the journals of the rollers confined in said slots, andmeans for holding the castings against rotation, substantially asdescribed.

In testimony whereof I aiiix my signature in presence of two witnesses.

BENJAMIN F. BALMER.

Witnesses:

W. A, SEXsoN, HENRY F. FLETCHER.

